package com.example.login;

import org.json.JSONException;
import org.json.JSONObject;

import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.view.Menu;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Activity which displays a login screen to the user, offering registration as
 * well.
 */
public class SignupActivity extends  SherlockActivity{
	
	public static final String access_token = "&access_token=0e6088e317124c335c04d4cc9a3ae9bb";

	
	public static final String url = "http://descubre.la/api/v1/users/new.json?";
	//email=cerdo@cerdo.com&password=1234567&first_name=cerdo&last_name=cerdo
			
	public static final String tag = "Tag";
	/**
	 * A dummy authentication store containing known user names and passwords.
	 * TODO: remove after connecting to a real authentication system.
	 */
	private static final String[] DUMMY_CREDENTIALS = new String[] {
			"foo@example.com:hello", "bar@example.com:world" };

	/**
	 * The default email to populate the email field with.
	 */
	public static final String EXTRA_EMAIL = "com.example.android.authenticatordemo.extra.EMAIL";

	/**
	 * Keep track of the login task to ensure we can cancel it if requested.
	 */
	private UserLoginTask mAuthTask = null;

	// Values for email and password at the time of the login attempt.
	private String mEmail;
	private String mPassword;
	private String mFname;
	private String mLname;

	// UI references.
	private EditText mEmailView;
	private EditText mPasswordView;
	private EditText mFnameView;
	private EditText mLnameView;
	
	private View mLoginFormView;
	private View mLoginStatusView;
	private TextView mLoginStatusMessageView;
	private SharedPreferences mPreferences;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_signup);
		
		mPreferences = getSharedPreferences(tag, MODE_PRIVATE);

		// Set up the login form.
		mEmail = getIntent().getStringExtra(EXTRA_EMAIL);
		mEmailView = (EditText) findViewById(R.id.email);
		mFnameView = (EditText) findViewById(R.id.fname);
		mLnameView = (EditText) findViewById(R.id.lname);
		
		mEmailView.setText(mEmail);

		mPasswordView = (EditText) findViewById(R.id.password);
		mPasswordView
				.setOnEditorActionListener(new TextView.OnEditorActionListener() {
					@Override
					public boolean onEditorAction(TextView textView, int id,
							KeyEvent keyEvent) {
						if (id == R.id.login || id == EditorInfo.IME_NULL) {
							attemptLogin();
							return true;
						}
						return false;
					}
				});

		mLoginFormView = findViewById(R.id.login_form);
		mLoginStatusView = findViewById(R.id.login_status);
		mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);

		findViewById(R.id.sign_in_button).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						attemptLogin();
					}
				});
	}


	/**
	 * Attempts to sign in or register the account specified by the login form.
	 * If there are form errors (invalid email, missing fields, etc.), the
	 * errors are presented and no actual login attempt is made.
	 */
	public void attemptLogin() {
		if (mAuthTask != null) {
			return;
		}

		// Reset errors.
		mEmailView.setError(null);
		mPasswordView.setError(null);
		mFnameView.setError(null);
		mLnameView.setError(null);
		
		// Store values at the time of the login attempt.
		mEmail = mEmailView.getText().toString();
		mPassword = mPasswordView.getText().toString();
		mFname = mFnameView.getText().toString();
		mLname = mLnameView.getText().toString();
		
		boolean cancel = false;
		View focusView = null;

		// Check for a valid password.
		if (TextUtils.isEmpty(mPassword)) {
			mPasswordView.setError(getString(R.string.error_field_required));
			focusView = mPasswordView;
			cancel = true;
		} else if (mPassword.length() < 4) {
			mPasswordView.setError(getString(R.string.error_invalid_password));
			focusView = mPasswordView;
			cancel = true;
		}

		// Check for a valid email address.
		if (TextUtils.isEmpty(mEmail)) {
			mEmailView.setError(getString(R.string.error_field_required));
			focusView = mEmailView;
			cancel = true;
		} else if (!mEmail.contains("@")) {
			mEmailView.setError(getString(R.string.error_invalid_email));
			focusView = mEmailView;
			cancel = true;
		}
		
		if (TextUtils.isEmpty(mFname)) {
			mFnameView.setError(getString(R.string.error_field_required));
			focusView = mFnameView;
			cancel = true;
		}
		
		if (TextUtils.isEmpty(mLname)) {
			mLnameView.setError(getString(R.string.error_field_required));
			focusView = mLnameView;
			cancel = true;
		}

		if (cancel) {
			// There was an error; don't attempt login and focus the first
			// form field with an error.
			focusView.requestFocus();
		} else {
			// Show a progress spinner, and kick off a background task to
			// perform the user login attempt.
			mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
			showProgress(true);
			mAuthTask = new UserLoginTask();
			mAuthTask.execute((Void) null);
		}
	}

	/**
	 * Shows the progress UI and hides the login form.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
	private void showProgress(final boolean show) {
		// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
		// for very easy animations. If available, use these APIs to fade-in
		// the progress spinner.
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
			int shortAnimTime = getResources().getInteger(
					android.R.integer.config_shortAnimTime);

			mLoginStatusView.setVisibility(View.VISIBLE);
			mLoginStatusView.animate().setDuration(shortAnimTime)
					.alpha(show ? 1 : 0)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginStatusView.setVisibility(show ? View.VISIBLE
									: View.GONE);
						}
					});

			mLoginFormView.setVisibility(View.VISIBLE);
			mLoginFormView.animate().setDuration(shortAnimTime)
					.alpha(show ? 0 : 1)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginFormView.setVisibility(show ? View.GONE
									: View.VISIBLE);
						}
					});
		} else {
			// The ViewPropertyAnimator APIs are not available, so simply show
			// and hide the relevant UI components.
			mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
			mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
		}
	}

	/**
	 * Represents an asynchronous login/registration task used to authenticate
	 * the user.
	 */
	public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
		@Override
		protected Boolean doInBackground(Void... params) {
			// TODO: attempt authentication against a network service.

			String data = Utility.getDataFromWebService(url+
					"email="+mEmailView.getText().toString().trim()
					+"&password="+mPasswordView.getText().toString().trim()
					+"&first_name="+mFnameView.getText().toString().trim()
					+"&last_name="+mLnameView.getText().toString().trim()					
					+access_token);
			
			try {
				JSONObject jo = new JSONObject(data);
				int user_id = jo.getInt("user_id");
				SharedPreferences.Editor mEditor = mPreferences.edit();
				mEditor.putInt("user_id", user_id);
				mEditor.commit();
				
				return true;

			} catch (JSONException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
			

			// TODO: register the new account here.
			return false;
		}

		@Override
		protected void onPostExecute(final Boolean success) {
			mAuthTask = null;
			showProgress(false);

			if (success) {
				Toast.makeText(getApplicationContext(), ""+mPreferences.getInt("user_id", 0), Toast.LENGTH_SHORT).show();

			} else {
				/*mPasswordView
						.setError(getString(R.string.error_incorrect_password));
				mPasswordView.requestFocus();*/
				Toast.makeText(getApplicationContext(), "Email or password is wrong", Toast.LENGTH_SHORT).show();
			}
		}

		@Override
		protected void onCancelled() {
			mAuthTask = null;
			showProgress(false);
		}
	}
}
